add script to generate API docs

docs.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+set -e
+
+version="$1"
+packs=("kdelibs" "kde-baseapps" "kde-workspace" "kde-extraapps")
+cwd="$(pwd)"
+
+if [ ! which doxygen ];then
+    echo "Doxygen is not installed"
+    exit 1
+fi
+
+source "$(dirname $0)/fetch.sh"
+
+# set again
+packs=("kdelibs" "kde-baseapps" "kde-workspace" "kde-extraapps")
+for p in "${packs[@]}";do
+    echo "Generating API docs for $p..."
+    cd "$p"
+    doxygen doxygen.conf
+    cd "$cwd"
+done